Chain element for pattern mechanism



Dec. 28,1926. 1,612,138

A. M. MARCOUX M CHAIN ELEMENT FOR PTTERN MECHANISM Filed Jan. 2. 1924 AL/DA M MA/im/x my mrs Patented Dee. 23, i926.

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Ani-na in. rrenoonx, on "Wononernn, riassnonsn'rfrs, assionon fro onorirron a KNO'WLES LOOM. WORKS, OF VIGRCESTER,

'/IASSACHUSETTS, A GRPRATION OIE' CHALI ELEMENT FOR PATTERN MECHANISM.

Application led January 2, 1924. Serial No. 684,006.

This invention relates to pattern mechanisin and more particularly to a pattern chain element for such mechanisms as the sorailed Knowles head.

(lne object of my invention is to provide iressed steel chain element sufiiciently rig d to raise the vibrator' levers commonly found in the Knowles head but of light weight and subject to heat treatment.

Another object of my invention is to provide a chain element having combined risei` and tube portions by means of which a pattern chain can be assembled morequiclly than possible where separate risers and tubes arensed.

It still further object of my invention is to provide a of different chain elements formed oit relatively few component parts but providing a variety of elements such as will facilitate the building of pattern chains.

`With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

in the accompanying drawings,

Fig. l is an end elevation of a portion ot' a Knowles head showing a pattern chain asse bled with chain elements made according to my invention7 a vertical. central longitudinal n through an element showing a combined riser and tube,

lilo; 3 is a view sin'iilar to Fig. 2 but shower combined with two tubes. one on thereof. and el: a view similar to Fig 2 but a riser witliout tubes.

in constructing the pattern chains of the type shown in Fig l it has lieretofore been common practice to employ risers or rolls and tubes, the rolls and tubes being sepa rate aint assembled on chain bars in the proper sequence to 'the desired. har

quickly than by the method heretofore in vogue.

Referring more particularly to the drawing. the head frame l has mounted therein bearings ll to receive the ends of chain shaft l2 which may be operated in `any desired manner. As shown in the drawings thershaft l2 has formed thereon two cylinders 13 and lwhicli are provided with sprockets l which receive the chains 1G and it?. rlhe chains are formed with bars 18 and 1Q which are held together by links 20, and it isl upon said bars that the tubes and risers which are shown in detail in Figs. Q to 5 inclusive are mounted.

"teferring to Fig. 2 it will be seen that the chain element is formed with a member 3() having an Vouter shell 3l forming the tread of the riser and having integral therewith a rede-.ced tube 32 which corresponds to the tube ordinarily employed in pattern chain construction. The tread and tube are connected by an integral web 33, which forms one wall of the riser. Fitting inside the shell il is a telescoging member Sii. the rim of which lits snugly against the inside of the tread 3l which it reinforces. A slight hub S6 is struck from the web 3? of the telescoping member 34 and has formed therewith an inwardly extending bearing portion 38 which is in alignment with the tube 32. rthe two members of the element are made of pressed steel which is subject to tempering and may be htted together or otherwise fastened to each other so as to be held from accidental separation.

ln Fig. 3 l have shown a construction wherein the riser is combined with two tubes, the member being formed as in Fig. 2 and the other half of the element being formed of a telescoping member Ll0 having` a rim el similar to rim and a web l2 from which extends outwardly a second tube f3 which is lformed similarly to tube 32.

ln Fig. l have shown a form of riser such as may be used when se eral risers are to be located adjacent each other on a chain bar7 the teleseoping member being similar to that shown in Fig. 2 while the outer .member is provided 'with a tread which is connected by means of web 5l. to an inwardly projecting tube 52 similar to bearing 38, the bearing 52 and the web 5l being joined by'an offset hub 53.

In Veach oi' the constructions shown in Figs. 2, 3, and et means are provided by which the inner telescoping member may be held more tightly to the outer tread member, said means comprising a cham't'ered edge 60 termed en the inner member against which is pressed the outer edge of the tread as at 6l. By this construction the two parts Will be held together and prevented from springing` apart when subjected to heat treatment.

`When it is desired to assemble a chain bar having' tivol risers which are separated by a single tnbepsuoh as shown at 7() in Fig. i, tivo of the chain elements as constructed in Fig. 2 will be used. IWhen it is desired to have a greater number of tubes between the risers I may use the type ot element shown in Fig. 3 and Where itis desired to have three or more risers together I magT use the type ci' riser shown in Fig. t for the oti'set elements ot the chain. In the orm ot elements shown in Figs. 2 and 3 the bearing portions correspond to the tubes ordinarily employed in the Knowles head, said bearing portions permitting the vibrator levers ot the head motion to remain in doivn position. For a more complete understanding of the relation between the elements and the other parts ot the Knowles head reference maj] be had to Patents Nos. 134,992

and 182,67 9.

.It will be seen :trom the foregoing that I have provided a chain element which Will permit the chain bar to be constructed more quickly than is possible with the tubes and risers at present in use, inasmuch as the elements are termed as combined tubes and risers. Also, it Will be seen that I am able to providethree different types of chain elements snch as are shown in Figs. 2, 3 and t by means ot but toni' different pressed metal parts, the telescoping member 34: being' common to the form shown in Figs. 2 and l and the tread member 3l being common to theftorm shown in Figs. 2 and 3.

Having' thus described Vmy invention it will be apparent changes and modilioations may be made therein by those skilled in the Vart Without departingr Jfrom the spirit and scope of the invention and I do not Wish to be limited to the details herein disclosed, but what I claim is:

1. A chain forming element for loom pattern mechanism, said element comprising a pair of pressed steel members having' parallel Webs, one member having a roll portion with an outer tread integral with the web of said member, that portion otl the tread remote from said web being chamtered, 'the other member having a portion telescoping into the irst member and having a chamiered part connecting the tread o'f said other niiember and the teiescoping portion thereoi, the chamfered parts ot' said members engaging each other to prevent separation et he members.

2. rtcchain 'forming eiement tor ioom. patVn tern mechanism, said element comprising a pair oi pressed steel mei'nbcrs having parallel Webs, one men lt r having a roil portion with an outer tread i, egrei 'with the web of said mber, that portion ot the tread remote noni said web being chainjiiered, the other member having a portion telescoping into the iirst member and having a chamt'ered part connecting the tread oi said other member and the telescoping portionv thereof. the chami'ered parts of said members engaging each other tov prevent separation oit the members, and each member having' a bearing portion extending axially with respect to the members.

3. A set oit members ior toi'niing chain elements for loom Ypattern mechanism, ail of said elements having a web portion and a bearing portion, the first element having a tread extending on one side ot the 'web and a bearing portion extending on theother side ot the web, the second member having a telescoping portion and tread portion both extending on the same side ot the web. y

the third member having' a teiescoping portion ot less diameter than the tread portion of the iirst named member and having' also a bearing portion extending' on opposite sides or the Web thereof, and the 'fourth member having a tread portion of larger diameter than the telescoping portion ot the second named member, and having also a bearing portion extendingon the same side et the Web, either of the tirst or 'fourth mem bers being combinable with either the second or the third member to form three distinctive terms of chain forming' elements.

In testimoirv whereof have hereunto a'iixed' my signature.

ALIDA M. MARCOUX.

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